100000 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 100010 - Statement - Consolidated Balance Sheets link:presentationLink link:calculationLink link:definitionLink 100020 - Disclosure - Leases - Schedule of Future Maturities (Detail) 2 link:presentationLink link:calculationLink link:definitionLink 100030 - Statement - Consolidated Balance Sheets (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 100040 - Statement - Consolidated Statements of Operations link:presentationLink link:calculationLink link:definitionLink 100050 - Statement - Consolidated Statements of Stockholders' Equity (Deficit) link:presentationLink link:calculationLink link:definitionLink 100060 - Statement - Consolidated Statements of Stockholders' Equity (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 100070 - Statement - Consolidated Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 100080 - Disclosure - Overview link:presentationLink link:calculationLink link:definitionLink 100090 - Disclosure - Going Concern and Management's Plans link:presentationLink link:calculationLink link:definitionLink 100100 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 100110 - Disclosure - Fair Value of Financial Instruments link:presentationLink link:calculationLink link:definitionLink 100120 - Disclosure - Other Financial Statement Details link:presentationLink link:calculationLink link:definitionLink 100130 - Disclosure - Warrants link:presentationLink link:calculationLink link:definitionLink 100140 - Disclosure - Leases link:presentationLink link:calculationLink link:definitionLink 100150 - Disclosure - Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 100160 - Disclosure - Stockholders' Equity (Deficit) link:presentationLink link:calculationLink link:definitionLink 100170 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 100180 - Disclosure - Net loss per share link:presentationLink link:calculationLink link:definitionLink 100190 - Disclosure - Defined Contribution Plan link:presentationLink link:calculationLink link:definitionLink 100200 - Disclosure - Subsequent Events link:presentationLink link:calculationLink link:definitionLink 100210 - Disclosure - Summary of Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 100220 - Disclosure - Fair Value of Financial Instruments (Tables) link:presentationLink link:calculationLink link:definitionLink 100230 - Disclosure - Other Financial Statement Details (Tables) link:presentationLink link:calculationLink link:definitionLink 100240 - Disclosure - Warrants (Tables) link:presentationLink link:calculationLink link:definitionLink 100250 - Disclosure - Leases (Tables) link:presentationLink link:calculationLink link:definitionLink 100260 - Disclosure - Stockholders' Equity (Deficit) (Tables) link:presentationLink link:calculationLink link:definitionLink 100270 - Disclosure - Income Taxes (Tables) link:presentationLink link:calculationLink link:definitionLink 100280 - Disclosure - Net loss per share (Tables) link:presentationLink link:calculationLink link:definitionLink 100290 - Disclosure - Going Concern and Management's Plans - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 100300 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 100310 - Disclosure - Fair Value of Financial Instruments - Summary of Financial Instruments Measured at Fair Value on Recurring Basis (Detail) link:presentationLink link:calculationLink link:definitionLink 100320 - Disclosure - Fair Value of Financial Instruments - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 100330 - Disclosure - Fair Value of Financial Instruments - Summary of Changes in Fair Value of Level 3 Financial Instruments (Detail) link:presentationLink link:calculationLink link:definitionLink 100340 - Disclosure - Other Financial Statement Details - Schedule of Property and Equipment (Detail) link:presentationLink link:calculationLink link:definitionLink 100350 - Disclosure - Other Financial Statement Details - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 100360 - Disclosure - Other Financial Statements Details - Intangible Assets (Detail) link:presentationLink link:calculationLink link:definitionLink 100370 - Disclosure - Other Financial Statement Details - Future Amortization Expense (Detail) link:presentationLink link:calculationLink link:definitionLink 100380 - Disclosure - Warrants - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 100390 - Disclosure - Warrants - Fair Value of Convertible Preferred Stock Warrant Liability (Detail) link:presentationLink link:calculationLink link:definitionLink 100400 - Disclosure - Leases - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 100410 - Disclosure - Leases - Schedule of Components of Lease Expense (Detail) link:presentationLink link:calculationLink link:definitionLink 100420 - Disclosure - Leases - Schedule of Supplemental Cash Flow Information Related to Leases (Detail) link:presentationLink link:calculationLink link:definitionLink 100430 - Disclosure - Leases - Schedule of Future Maturities (Detail) link:presentationLink link:calculationLink link:definitionLink 100440 - Disclosure - Stockholders' Equity (Deficit) - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 100450 - Disclosure - Stockholders' Equity (Deficit) - Summary of Stock Based Compensation Expense (Detail) link:presentationLink link:calculationLink link:definitionLink 100460 - Disclosure - Stockholders' Equity (Deficit) - Schedule of Fair Value of Award Granted Using Black-Scholes Option Pricing Model (Detail) link:presentationLink link:calculationLink link:definitionLink 100470 - Disclosure - Stockholders' Equity (Deficit) - Summary of Stock Option and Restricted Stock Unit Transactions (Detail) link:presentationLink link:calculationLink link:definitionLink 100480 - Disclosure - Stockholders' Equity (Deficit) - Summary of Restricted Stock Unit Transactions (Detail) link:presentationLink link:calculationLink link:definitionLink 100490 - Disclosure - Income Taxes - Schedule of Geographical Distribution of Loss before Income Taxes (Detail) link:presentationLink link:calculationLink link:definitionLink 100500 - Disclosure - Income Taxes - Provision for Income Tax Benefit by Applying Statutory Federal Income Tax Rate to Operating Loss (Detail) link:presentationLink link:calculationLink link:definitionLink 100510 - Disclosure - Income Taxes - Significant Components of Company's Deferred Tax Assets and Liabilities (Detail) link:presentationLink link:calculationLink link:definitionLink 100520 - Disclosure - Income Taxes - Additional Information (Detail) link:presentationLink link:calculationLink link:definitionLink 100530 - Disclosure - Income Taxes - Summary of Gross Unrecognized Tax Benefits (Detail) link:presentationLink link:calculationLink link:definitionLink 100540 - Disclosure - Net loss per share - Schedule of Potentially Dilutive Securities Outstanding Excluded from Computations of Diluted Weighted-Average Shares Outstanding (Detail) link:presentationLink link:calculationLink link:definitionLink 100550 - Disclosure - Defined Contribution Plan - Additional Information (Details) link:presentationLink link:calculationLink link:definitionLink